Bug 1679975 (CVE-2019-8955)

Summary: CVE-2019-8955 tor: memory exhaustion in the KIST cell scheduler resulting in denial of service
Product: [Other] Security Response Reporter: Dhananjay Arunesh <darunesh>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED CURRENTRELEASE QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: jamielinux, lewk, mh, pwouters, rh-bugzilla, s
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: tor 0.3.5.8 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-06-10 10:48:45 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1679976, 1679977    
Bug Blocks:    

Description Dhananjay Arunesh 2019-02-22 11:49:27 UTC
In Tor before 0.3.3.12, 0.3.4.x before 0.3.4.11, 0.3.5.x before 0.3.5.8, and 0.4.x before 0.4.0.2-alpha, remote denial of service against Tor clients and relays can occur via memory exhaustion in the KIST cell scheduler.

References:
https://blog.torproject.org/new-releases-tor-0402-alpha-0358-03411-and-03312 
https://trac.torproject.org/projects/tor/ticket/29168

Comment 1 Dhananjay Arunesh 2019-02-22 11:55:21 UTC
Created tor tracking bugs for this issue:

Affects: fedora-all [bug 1679976]

Comment 2 Dhananjay Arunesh 2019-02-22 11:55:42 UTC
Created tor tracking bugs for this issue:

Affects: epel-7 [bug 1679977]

Comment 3 Product Security DevOps Team 2019-06-10 10:48:45 UTC
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.